การแปลงรูปหลายเหลี่ยมสามมิติเป็นรูปเรขาคณิตปฐมฐานด้วยเรบกราฟ
In Virtual world 3D objects are represented by primitives and sculpted primitive but in general programs use polygonal mesh. Hence, 3D polygonal mesh to primitive conversion can reduce cost and time to create new 3D object in Virtual world. We preserve shape of 3D object by using, average geodesic d...
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| 格式: | Theses and Dissertations |
| 語言: | Thai |
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จุฬาลงกรณ์มหาวิทยาลัย
2010
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| 主題: | |
| 在線閱讀: | https://digiverse.chula.ac.th/Info/item/dc:43768 |
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| 機構: | Chulalongkorn University |
| 語言: | Thai |
| 總結: | In Virtual world 3D objects are represented by primitives and sculpted primitive but in general programs use polygonal mesh. Hence, 3D polygonal mesh to primitive conversion can reduce cost and time to create new 3D object in Virtual world. We preserve shape of 3D object by using, average geodesic distance (AGD) as a Morse function in, Reeb graph. Then compare all defined fitting primitives and choose the best one. The results were measured by hausdorff distance with the originals of 380 models 19 types from Princeton University show that primitive represented objects have the same shape as originals. The convex objects have less hausdorff distance than the concave objects. |
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